Join Date: Sep 1999
Location: Talking Rock, Ga. U.S.A.
# 461 heads were used from ' 62-66, and then changed over to # 462 heads mid year 1966. They were used on a few 250 hp. engines, but mostly 275-300-350-365-375 hp. engines. The 300 hp. and lower engines had 1.94/1.5 valves, and the ones above 300hp. had 2.02/1.6 valves. They flowed around 160cc., except for the X versions, which flowed around 175cc., and they all had 62-64 cc. combustion chambers. From a performance state, if they are good, use them, but if they need much work at all, you are better off buying a aftermarket set, and selling these to a restorer. They will bring anywhere from $100- up , depending on condition, and market. I've seen good ones priced at $700+.
Many Used Parts for Chevelles, and Camaros- Just ask!
Team Chevelle Tag Team Moderator